Router Submarines after a pause

I have the Buildbotics controller upgraded Mar 23 to 1.2.1. The router started to submarine through the material. Steps to reproduce:

  1. Boot the Buildbotics. This is the first routing job of the day.
  2. start a roughing pass
  3. paused the job
  4. turn off the router
  5. Remove the dust boot
  6. Put the dust boot back on
  7. restart the router
  8. Watch

Within 6 passes Buildbotics was lowering the router 1mm every horizontal pass. Within 18 passes it was attempting to go through the material in one shot.

I tried to reproduce the effects in a dry rouging pass by performing the same steps again: no go - the Buildbotics performed perfectly.

This has happened before.
Help?

Hey Michael,

this is a frequently reported issue. However there can be different causes.